Zip shortened on back of costume as much as required (6)
I believe the answer is:
enough
'as much as required' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for enough that I've seen before include "To the required degree" , "As much as needed" , "Satisfactory quantity" , "Adequate, sufficient" , "This'll do" .)
